Time conversions

The SI unit of time is the second. From here the minute (60 seconds) and the hour (3600 seconds) are derived. A day is assumed to be 86,400 seconds for the purposes of this calculator although this can vary with the insertion of a "leap second".

Whilst every effort has been made to ensure the accuracy of the metric calculators and charts given on this site, we cannot make a guarantee or be held responsible for any errors that have been made. If you spot an error on this site, we would be grateful if you could report it to us by using the contact link at the top of this page and we will endeavour to correct it as soon as possible.